i386: ---
 arch/i386/mm/pageattr.c       |   10 ++++++++++
 include/asm-i386/cacheflush.h |    1 +
 2 files changed, 11 insertions(+)

Index: linux/arch/i386/mm/pageattr.c
===================================================================
--- linux.orig/arch/i386/mm/pageattr.c
+++ linux/arch/i386/mm/pageattr.c
@@ -8,6 +8,7 @@
 #include <linux/highmem.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/bootmem.h>
 #include <asm/uaccess.h>
 #include <asm/processor.h>
 #include <asm/tlbflush.h>
@@ -207,6 +208,17 @@ int change_page_attr(struct page *page, 
 	return err;
 }
 
+int change_page_attr_addr(unsigned long addr, int numpages, pgprot_t prot)
+{
+	unsigned long pfn = addr >> PAGE_SHIFT;
+	int err = 0;
+	if (pfn < max_low_pfn) {
+		err = change_page_attr(pfn_to_page(pfn),
+			min_t(unsigned,numpages,max_low_pfn-pfn), prot);
+	}
+	return err;
+}
+
 void global_flush_tlb(void)
 {
 	struct list_head l;
Index: linux/include/asm-i386/cacheflush.h
===================================================================
--- linux.orig/include/asm-i386/cacheflush.h
+++ linux/include/asm-i386/cacheflush.h
@@ -25,6 +25,7 @@
 
 void global_flush_tlb(void); 
 int change_page_attr(struct page *page, int numpages, pgprot_t prot);
+int change_page_attr_addr(unsigned long pfn, int numpages, pgprot_t prot);
 
 #ifdef CONFIG_DEBUG_PAGEALLOC
 /* internal debugging function */